Indian Journal of Agricultural Research

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Indian Journal of Agricultural Research, volume 39 issue 1 (march 2005) : 47 - 51

STUDIES ON DIFFERENT ASPECTS OF EffiCACY OF SOME COMMERCIAL MICROBIAL PESTICIDES AGAINST DIACRlSIA OBUQUA ON JUTE

Swarnali Bhattacharya, Aniruddha Pramanik
1Department of Agricultural Entomology, Uttar Banga KrishiViswavidyalaya, Pundibari, Cooch Behar, West Bengal- 736 165, India

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Cite article:- Bhattacharya Swarnali, Pramanik Aniruddha (2024). STUDIES ON DIFFERENT ASPECTS OF EffiCACY OF SOME COMMERCIAL MICROBIAL PESTICIDES AGAINST DIACRlSIA OBUQUA ON JUTE. Indian Journal of Agricultural Research. 39(1): 47 - 51. doi: .

ABSTRACT

The laboratory investigation was carried out on 2 nd instar larvae of Diacrisia obliqua with two commercial microbial pesticides viz., Btk 55000 SU/mg and avermectin 1.8% w/v separately and in combination with different synthetic insecticides. Among the microbials avermectio @ 0.0018% and Btk @ 0.2% provided 100 and 80% mortality after 48 h of treatment respectively. However, at 96 h after treatment Btk@ 0.2% gave the highest mortality of 93.33% being significantly superior to all other treatments except endosulfan @ 0.052%, monocrotophos 0.04%, acetamiprid 0.002%, dichlorvos @ 0.057% and avermectin 0.0018%. Thus, both the microbial pesticides Btk and avermectin are effective in control of the pest. The best result in the joint effect with different insecticides revealed that Btk (0.1%) with endosulfan (0.026%) mixture, Btk (0.1%) and acetamlprid (0.001%) mixture provided 100% initial larval mortality. Whereas avermectin In combination with the synthetic insecticides provided initial 100% larval mortality in all the treatments except cartap hydrochloride combination.


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